Really early in the morning at the beach, about 30 minutes or so before sunup. 

The best time to be out, when the lights are still lit on the Pier and a handful of surfers and walkers are strolling.

My favorite time for a morning #Photowalk. 

https://youtu.be/r2ojBeUJnKU

These were mostly shot on an iPhone 8 Plus except for one image. Can you tell which one?